CN211058141U

CN211058141U - Precast concrete post convenient to be connected with composite beam

Info

Publication number: CN211058141U
Application number: CN201921511613.6U
Authority: CN
Inventors: 杜晓; 孙良君; 姜程鹏; 程栋华; 刘星
Original assignee: Suzhou Wujiachen Construction Industry Co ltd
Current assignee: Suzhou Wujiachen Construction Industry Co ltd
Priority date: 2019-09-11
Filing date: 2019-09-11
Publication date: 2020-07-21
Anticipated expiration: 2029-09-11

Abstract

The utility model discloses a precast concrete post convenient to be connected with superposed beam, including reinforced concrete post body, be provided with superposed beam joining region on the post body, from the top down has set gradually upper portion thread bush in the superposed beam joining region, middle part thread bush and lower part thread bush, all install first anchor reinforcing bar on upper portion thread bush and the lower part thread bush, this internal reinforcing bar portion ligature of first anchor reinforcing bar and post is connected, two through-holes have been seted up on middle part thread bush's the radial surface, middle part thread bush establishes on two second anchor reinforcing bars through two through-hole covers, two second anchor reinforcing bar mutually perpendicular set up and with this internal reinforcing bar portion ligature of post be connected. Adopt the utility model discloses can make beam column connected node simple structure, construction convenience, can realize that prefabricated post and the simple and convenient quick on-the-spot of coincide roof beam are connected to connect reliable and stable.

Description

Precast concrete post convenient to be connected with composite beam

Technical Field

The utility model relates to an assembly type structure technical field, concretely relates to precast concrete post convenient to be connected with composite beam.

Background

Since the introduction of 'actively promoting building industrialization' in 2011, the development of the domestic building industry carries out structural adjustment and transformation upgrading, the time of about 10 years is strived for, the proportion of the assembled building in the newly built building area reaches 30%, and the novel building industrialization taking 'green, industrialization and informatization' as the development direction is emphasized and aroused. Although the assembly type industry is developed rapidly, the theoretical basis of the assembly type structure in China is relatively weak, the existing assembly type building still adopts the design theory and the evaluation method of 'equal cast-in-place', the design and the evaluation standard aiming at the performance of the assembly type building are lacked, and the system is still to be perfected.

The assembly type concrete frame structure is one of the most widely applied assembly type structure systems at present, and beam-column connecting nodes in the structure are core stress parts influencing the overall anti-seismic performance. The existing fabricated concrete beam-column joint is divided into a wet connection mode and a dry connection mode according to whether a post-cast section exists at a joint part.

The wet connection assembly type node is also called an assembly integral type node, and is a node form formed by connecting prefabricated beams, columns or T-shaped components through steel bar lapping, anchoring or sleeve connection at a joint part and pouring concrete behind the joint part of the prefabricated components. The shear resistance of the node area and the connection reliability of the steel bars are ensured through certain construction measures, the prefabricated column is a single-layer column component or a serial column component, and the prefabricated beam is a superposed beam generally. In a wet connection node, plastic deformation is often generated in an area (plastic hinge area) outside the node, and the connection area should keep elasticity and accord with the design principle of a strong node and a weak member.

The dry-type connection assembly type node is a node form which does not need post-cast concrete, is formed by embedding connecting parts in a member and is connected in a prestressed tendon, a bolt or a welding mode and the like. The elastic-plastic deformation of the dry connection node usually occurs in the connection area, and the deformation of the beam-column member is in the elastic range, so the energy consumption capability of the node is often improved by adding energy consumption members (angle steel, dampers and the like). The damage degree of the prefabricated part of the dry connection node is relatively small, the repair and the replacement after the earthquake are easily realized, and the dry connection node has better structure restorability

The lower part of the reinforced concrete superposed beam adopts a precast concrete form, the upper part of the reinforced concrete superposed beam adopts a cast-in-place concrete form, indexes such as rigidity, bearing capacity and the like of the assembled member are the same as those of the cast-in-place concrete member by adopting corresponding connection measures on the joint surface, and compared with the cast-in-place beam, the reinforced concrete superposed beam has the advantages of convenience in construction, template saving, construction period shortening, construction cost reduction, member standard reduction and the like; compared with the fully precast concrete beam, the beam has the advantages of strong integrity, good earthquake resistance and the like. Therefore, the superposed beams are applied in a large amount in engineering, and good social benefit and economic benefit are obtained. The connection node of the reinforced concrete composite beam and the precast concrete column belongs to wet connection, the problem of node connection is a technical problem, at present, a large amount of steel bars are needed to be connected at the node of the reinforced concrete composite beam and the concrete column, the node structure is complex, and construction is difficult.

Therefore, it is necessary to develop a precast concrete column that is convenient to connect with a composite beam to solve the problems of complex structure and difficult construction of beam-column joints.

Disclosure of Invention

The to-be-solved technical problem of the utility model is to provide a precast concrete post convenient to be connected with superposed beam can make beam column connected node simple structure, construction convenience, can realize that precast post and the simple and convenient quick on-the-spot of superposed beam are connected to connect reliable and stable.

In order to solve the technical problem, the utility model provides a precast concrete post convenient to be connected with superimposed beam, including reinforced concrete post body, be provided with the superimposed beam joining region on the post body, from the top down has set gradually upper portion threaded sleeve, middle part threaded sleeve and lower part threaded sleeve in the superimposed beam joining region, all install first anchor reinforcing bar on upper portion threaded sleeve and the lower part threaded sleeve, this internal reinforcing bar portion ligature of first anchor reinforcing bar and post is connected, two through-holes have been seted up on middle part threaded sleeve's the radial surface, middle part threaded sleeve establishes on two second anchor reinforcing bars through two through-hole covers, and two second anchor reinforcing bar mutually perpendicular set up and this internal reinforcing bar portion ligature of post is connected.

Further, the first anchoring steel bar is of L-type structure, and the first anchoring steel bar is in threaded connection with the corresponding upper threaded sleeve end and the lower threaded sleeve end.

Furthermore, the middle threaded sleeve is provided with a shear pin, and the shear pin is in threaded connection with the middle threaded sleeve and partially protrudes out of the middle threaded sleeve.

Furthermore, a notch is formed in the part, located on the protruding part, of the shear pin, and a pin piece is inserted into the notch.

Furthermore, the number of the upper threaded sleeve, the middle threaded sleeve and the lower threaded sleeve is 2.

Furthermore, the upper threaded sleeve is connected with the upper part of the superposed beam through a longitudinal rib, and the lower threaded sleeve is connected with the embedded connecting plate at the bottom of the superposed beam through a bolt.

Furthermore, the end surfaces of the upper threaded sleeve, the middle threaded sleeve and the lower threaded sleeve are flush with the end surface of the pillar body.

The utility model has the advantages that:

1. through the pre-buried threaded sleeve in the post side and the coincide roof beam hookup location at the post body, wherein upper portion threaded sleeve is connected through indulging the muscle with the upper portion of coincide roof beam, and middle part threaded sleeve installs shear pin and is connected through post-cast concrete with the roof beam end keyway when connection construction, and lower part threaded sleeve passes through the bolt and is connected with the pre-buried connecting plate in roof beam bottom, and the node position biography power is clear and definite reliable, has strengthened the wholeness of node.

2. This internal screw sleeve of post does not all expose the post side surface, and prefabricated post is pleasing to the eye and the transportation is convenient.

3. The utility model discloses the field operation volume is less, can portably realize the connection of concrete frame composite beam and precast concrete frame post fast, and construction convenience is efficient.

4. The prefabricated column is a factory prefabricated member, the height of the prefabricated column can reach the height of a plurality of floors, the prefabricated beam is installed on each floor, the connection between the column and the column is reduced, the assembling degree can be improved, the construction speed is high, and the construction cost is low.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a schematic view of the threaded sleeve with L-type anchoring bars of the present invention;

FIG. 3 is a schematic view of the middle threaded sleeve of the present invention;

FIG. 4 is a schematic view of the shear pin of the present invention;

FIG. 5 is a schematic structural view of the shear pin of the present invention locked to the middle threaded sleeve;

figure 6 is a schematic cross-sectional view of the post body of the present invention;

fig. 7 is a schematic view of the present invention after assembly and use.

Detailed Description

The present invention is further described with reference to the following drawings and specific embodiments so that those skilled in the art can better understand the present invention and can implement the present invention, but the embodiments are not to be construed as limiting the present invention.

Referring to fig. 1 to 3, an embodiment of the precast concrete column convenient for connection with a composite beam of the present invention includes a reinforced concrete column body 1, a composite beam connection area 2 is provided on the column body, an upper threaded sleeve 3, a middle threaded sleeve 4 and a lower threaded sleeve 5 are sequentially provided in the composite beam connection area from top to bottom, and the upper threaded sleeve, the middle threaded sleeve and the lower threaded sleeve are all pre-buried;

the terminal surface of upper portion screw sleeve, middle part screw sleeve and lower part screw sleeve flushes with the terminal surface of guaranteeing the post body that the transportation is convenient, can not collide the damage. The number of the upper threaded sleeve, the middle threaded sleeve and the lower threaded sleeve is 2.

The first anchoring steel bars 6 are arranged on the upper threaded sleeve and the lower threaded sleeve and are in binding connection with steel bar portions in the column body, the first anchoring steel bars are of L-type structures and are in threaded connection with the end portions of the corresponding upper threaded sleeve and the lower threaded sleeve, connection firmness is improved, and the L-type structure ensures axial connection strength of the upper threaded sleeve and the lower threaded sleeve after pouring;

and two through-holes have been seted up on middle part threaded sleeve's radial surface, and middle part threaded sleeve overlaps through two through-holes and establishes on two second anchor reinforcing bars 7, and two second anchor reinforcing bars mutually perpendicular set up and be connected with this internal reinforcing bar portion ligature of post, and two second anchor reinforcing bars can guarantee middle part threaded sleeve's position to increase the anchoring ability, after pouring, guarantee middle part threaded sleeve's axial joint strength.

Referring to fig. 4, the middle threaded sleeve is provided with a shear pin 8, the shear pin is installed when the beam-column node is assembled on site, the shear pin does not need to be installed in advance, and the shear pin is in threaded connection with the middle threaded sleeve and is partially protruded to be convenient for being combined with the composite beam. Specifically, a notch is formed in the part, protruding out, of the shear pin, and a pin piece 9 is inserted into the notch, so that the combination effect of the shear pin and the composite beam is further improved.

The composite beam is of a reinforced concrete structure and is provided with a precast beam and a post-pouring part, longitudinal ribs 12 on the upper part of the composite beam are positioned on the top surface of the precast beam, a beam end key groove 13 is arranged on the upper part of the beam end of the precast beam, a connecting plate 10 is pre-embedded on the lower part of the beam end of the precast beam, a connecting and mounting groove is arranged at the bottom of the beam end of the precast beam, a bolt connecting hole is arranged at the bottom of the connecting plate, and a notch is arranged at the lower side of the bolt connecting hole.

Referring to fig. 5, the shear pin is locked on the middle threaded sleeve, and the shear pin does not need to be installed during transportation, so that the flatness of the pillar body during transportation is guaranteed.

Referring to FIG. 6, a cross-sectional view of the post body is shown.

Referring to fig. 7, when in use, firstly, the installation of the post body is completed, then, the superposed beam is installed, the superposed beam is arranged from top to bottom and is in threaded connection with the lower threaded sleeve through the bolt connecting hole by a bolt 11, then, the longitudinal bar at the upper part of the superposed beam is installed, the end part of the longitudinal bar at the upper part of the superposed beam is pre-provided with a threaded joint, when in installation, firstly, the connection between the longitudinal bar at the upper part of the superposed beam and the upper threaded sleeve is completed, then, the binding between the longitudinal bar at the upper part of the superposed beam and the stirrup of the superposed beam is completed, the shear resistant pin is locked on the middle threaded sleeve, the projecting part of the shear resistant pin is positioned in the key slot at the beam end of the superposed beam, then, the gasket and the lock nut are connected on the bolt, the lock nut is pressed on the connecting plate to form pre-tightening force, the templates are erected at two sides of the superposed beam, the concrete is poured, and (6) finishing the assembly. Adopt between holistic post body and the composite beam to indulge muscle, bolt and shear pin and be connected, it is convenient, efficient to be under construction, also can effectively guarantee joint strength.

The above embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. Equivalent substitutes or changes made by the technical personnel in the technical field on the basis of the utility model are all within the protection scope of the utility model. The protection scope of the present invention is subject to the claims.

Claims

1. The utility model provides a precast concrete post convenient to be connected with superposed beam, its characterized in that, includes reinforced concrete post body, be provided with superposed beam joining region on the post body, from the top down has set gradually upper portion screw sleeve, middle part screw sleeve and lower part screw sleeve in the superposed beam joining region, all install first anchor reinforcing bar on upper portion screw sleeve and the lower part screw sleeve, first anchor reinforcing bar is connected with the reinforcing bar portion ligature in the post body, two through-holes have been seted up on the radial surface of middle part screw sleeve, middle part screw sleeve overlaps through two through-hole covers and is established on two second anchor reinforcing bars, two second anchor reinforcing bar mutually perpendicular set up and with this internal reinforcing bar portion ligature of post and be connected.

2. The precast concrete column convenient to be connected with a composite beam of claim 1, wherein the first anchoring steel bar is of L type structure, and the first anchoring steel bar is screwed with the corresponding upper and lower threaded sleeve ends.

3. The precast concrete column convenient to be coupled with a composite girder according to claim 1, wherein the middle threaded sleeve is installed with a shear pin which is threadedly coupled with the middle threaded sleeve and is partially protruded.

4. The precast concrete column convenient to be coupled with a composite girder according to claim 3, wherein the shear pin is provided with a notch on the protruded portion, and a pin piece is inserted into the notch.

5. The precast concrete column convenient to be connected with a composite beam according to claim 1, wherein the number of the upper, middle and lower threaded sleeves is 2.

6. The precast concrete column convenient to be connected with the composite beam as recited in claim 1, wherein the upper threaded sleeve is connected with the upper part of the composite beam through a longitudinal rib, and the lower threaded sleeve is connected with the embedded connecting plate at the bottom of the composite beam through a bolt.

7. The precast concrete column convenient to connect with a composite beam according to claim 1, wherein the end faces of the upper, middle and lower threaded sleeves are flush with the end face of the column body.